Calculating machine



March 3, 1942. R, L. MULLER CALCULATING MACHINE:

5 sheets-sheet 1 Filed Dec. l, 1937 v March3, 1942. R. l.. MULLERCALCULATING MACHINE Filed Dec. l, 1937r 5 Sheets-Sheet 2 INVENTOR Rolfe/L. //ef www M A TTORNE YS y March 3, 1942. y R L MULLER 2,274,803

GALCULATING MACHINE Filed Dec. l, [1937 5 Sheets-Sheet 3 INVENTOR ATTORNEYS March 3, 1942.

R. 1 MULLER CALCULATING MACHINE 5 Sheets-Sheet 4 Filed Dec. l, 1937INVENTOR Polfer L.. 77E/ler ATTORNEYS Wwf/@MMM March 3, 1942. R L,MULLER 2,274,803

CALCULATING MACHINE Filed Deo. l, 1957 5 Sheets-Sheet 5 [N VENTOR RolrerL m//er that overdraws the account.

vention has been devised to solve this problem.

Patented Mar. 3, 194.2

UNITED STATES i PATENT OFFICE cALoULa'rING Macrmm nobel-t L. Muller,peut, Mich., amgnor to Machine Company, Detroit, Mich., a corporation ofMichigan Application December 1, 1937, Serial No. 177,435

` (ci. zas-so) `the balancel or total column, or he can ma- BurroughlAdding 3 Claims.

This invention relates to calculating machines and more particularly toa bookkeeping type of calculating machine for printing and making thenecessary bookkeeping calculations and entries for the different columnsof a bookkeeping form.

One type of work for which these machines are used is that of postingcustomers accounts in banks. This work is so voluminous in the largebanks that a continual demand arises for greater speed and moreautomatic operation. Posting of the account of a customer may involvethe posting of one or several checks only; or the posting of a depositonly; or the posting of one or more checks and a deposit. After eachtype of post,

ing a new balance must be obtained. These variations in posting requirethat the machine be appropriately conditioned for'addition, forsubtraction, and for total taking, andthe various itemsmust be printedin the proper co1- umns.- But, no matter what the character of theaccount to be posted, as little time as possible must be used in themanipulation of the machine and in its automatic operation.`l

Another factor that enters is that the banks do not want any of theircustomers to overdraw more, it should take place before the bookkeepingoperations have gone very far because the banks do not ordinarily carryoverdrawn accounts. Instead, they d0 not accept the check 'Ihe presentin- The general object of the invention is to provide an improvedautomatic calculating machine.

A more particular object is 'to provide a machine in which totals aretaken automatically and one in which, when the total is negative,automatic operation of the machine will be stopped before the total istaken, thereby notifying the operator that a negative total existsbefore a new balance is taken. y

kAnother object is to provide an improved calculating machine in which,when the operator manipulates the motor bar to initiate a' machine cyclefor the posting of a check, he may do so in such a way as to eithercause the paper carriage, after said check has been subtracted, to moveto the deposit column nWhere the machine will be automaticallypre-conditioned for total taking and a total then taken automatically in55 conditioned, is given a cycle of operation during nipulate the bar ina manner to cause the carriage to move to the deposit" column where itas well as the automatic operation of the machinel will stop to permitthe entry of a deposit.

Other and further objects and their resultant advantages will beapparent from the following description given in connection with thedrawings in Whichz' Figure 1 is a right side elevation of a machineembodying this invention, the machine elements being in normal positionFig. 2 is a partial rightside elevation illustrating the motor controlsand associated mechanisms ,with th'e auxiliary motor bar latched downand with the machine .parts at the end of a forward machine stroke;

Fig. 3 is a fragmentary detail in side elevation of the auxiliary motorbar and associated parts iuustraung the auxiliary motor bar had downA infully depressed position;

Fig. 4 is a fragmentary left side elevation or detail of the total keyand portions of the negative total lock controls;

Fig. 5 is a fragmentary enlarged detail in side elevation of theautomatic total-taking means illustrating the latter in trippedposition, but prior to machine operation;

Fig. 6 is a diagrammatic illustration of four different types oftransactions a machine embodying the principles oi this invention iscapable of performing,

Fig. 7 is a left side elevation showing the subtract controllingmechanism of the machine to which the invention is applied.

Fig. 8 is a detail side elevation of one of the interlocks on themachine.

The illustrated embodiment of this invention for accomplishing theheretofore mentioned desired results is shown as applied to a Burroughshigh keyboard machine of the type illustrated in many known patents, as,for example, the

Fasinski Patents No. 1,778,506 and No. 1,911,768, for which reason ythegeneral construction of the machine will be described only,very brieily,reference being had to the foregoing and other issued patents forfurther details of construction.

It will be obvious to those skilled in the art that the invention may beapplied to other types of calculating machines.

General Construction A'lhe machine, which is'illustrated generally inFig. 1, is of a type which, after it is properly which its variousfunctions are performed. It may be cycled manually by means of a handcrank but most of the present day machines are provided with a poweroperated driving means that is actuated by an electric motor 22 (Fig.1). This motor drives the machine through a normally disengaged clutchin the housing 24, which clutch vis connected through the necessaryshafts, cranks and levers to the main drive shaft that, in turn, issuitably connected to other parts of the machine to operate them. Themotor and clutch are normally controlled by the motor bar M which, whendepressed, starts the motor and engages the clutch to cause said motorto give the machine a single cycle of operation. During the iirst halfcycle, or forward stroke." oi' the machine the motor positively drivessaid machine and tensions the springs E3B. During the second half cycle,the motor drive simply moves so as not to interfere with the machineoperation, the actual power being furnished by the springs i3l for saidsecond half cycle or return stroke. The motor and its controis aredescribed in detail in Vincent Patent No. 866,750, where, however, themotor is shown as a continuously running motor, The motor employed onthe present day machine is a normally inactive motor whose circuit isclosed by depression of said motor bar as disclosed in BindschedlerPatents Nos. 1,658,036 and 1,773,- 164.' Repeat machine cycles may beobtained by mechanism such as disclosed in Muller 1,397,774.

An amount indexing means is provided for enabling items or amounts to beindexed in the machine. This indexing'means comprises a plurality oidepressible amount keys I, ofwhich, in a bank machine, there are usuallyseventeen rows of nine keys each. When one of these keys is depressed,it rocks a bell crank 2 (Fig. 5) to set an index stop in the form of awire 3 which arrests the corresponding actuator 4 in a positioncorresponding to the digital value of the key depressed. The actuator iscarried on the forward end` of a pivoted lever 6, the rear end of whichis shown in Fig. 1. Said rear end carries a plurality of type 8. At thebeginning of a machine cycle, the actuators are normally released andthey descend to differential positions. This also differentiallypositions the type and,

near the end of the first half of the machine The machine has a mainadd-subtract registering mechanism, sometimes called a crossfooter,which comprises a set of add pinions II meshing with a set of subtractpinions I2. Said registering mechanism is of the tumbling type; that is,it may be tumbled or rocked from an add position in which the addpinions are in active position for connection with the actuators to asubtract position where the subtract pinions are in active position, andvice versa. Said registering mechanism is normally in add position, butan add-subtract controlmeans may be conditioned either manuallly orautomatically as described in Pasinski No. 1,778,506 so that saidregistering mechanism will assume a subtract position. Said mechanism isbest illustrated in Fig. 7. It includes a subtract lever I4 which isused when the machine is to be conditioned for subtraction manually. Forautomatic control, the carriage has a cam roll I4* which, when thecarriage reaches a predetermined position, rocks a cam lever I4h that isconnected through link I 4C to the subtract lever I4. When the subtractlever is moved forward either manually or automatically, it raises alink I4d that lifts the rear end of a pitman I 4'. 'I'his places ashoulder I4f in the path of a stud I4* cn a member I4k that is rockedduring each machine cycle. Said stud I4' engages the shoulder I 4fduring the first half of the machine cycle and pulls a pivoted leverI4'n clockwise which tumbles the crossfooter from add to subtractposition. The machine is normally conditioned for addition owing to thefact that a spring I4r pulls rearward on a lever I4s connectedby a studand slot connection I4t to the link I 4 that is connected to thesubtract lever I4. After said subtract lever is moved to subtractposition it is locked in such position during the machine cycle but, atthe end of said cycle, it is released, whereupon the spring I4 pullssaid lever to add position with the result that, during the first partof the next cycle, the crossfooter will be tumbled to add positionunless the operator or the carriage again indexes said control means forsubtraction.

A tens-transfer mechanism is associated with said lregisteringmechanism, said tens-transfer mechanism being of a type employing anextra step of movement of the actuators and being capable of eiiectingboth carries and borrows,n as described in Rinsche No. 1,172,484. It isoperated by tens-transfer projections I6 and I1 (Fig. 1) on the add andsubtract pinions.

A plurality of multiple registers I5 are provided as described inFasinski No. 1,911,768, which registers may be selected automaticallyunder the control of the paper carriage as described in said patent.

Printing is controlled so that it may occur in diiferent columns' onrecord material supported on the machine. For this purpose acolumnarprinting control means is provided which is in the form of atraveling paper carriage 20, together with means for moving andcontrolling the movement of said carriage. The carriage is urged acrossthe machine to the left, viewing the machine from the front, by a spring'drum 2l (Fig. '7) and this movement, called movement in tabulatingdirection, is controlled by a tabulating mechanism, portions of whichare shown in Fig. l, and which is described in Rinsche No. 1,516,685.Said mechanism includes a tab bar 23 (Fig. l) carrying a plurality oftab stops 26* which engage an abutment 26h. Normally, near the end ofeach machine cycle, the tab bar 28 is rocked clockwise (Fig. 1) whichdisengages the tab stop and the abutment. The carriage immediatelystarts to move, but the tab bar is released almost immediately afterbeing rocked and it returns to normal so that the next tab stop hits theabutment and arrests the carriage. Thus, normally, the carriage movesfrom one columnar position to another near the end of each machinecycle. The carriage is returned across the machine by a power operatedcarriage return mechanlsm, of which a part is shown at 21 in Fig. 1 andwhich is described in detail in Rinsche No. 1,580,534.

The record material is held on the paper carriage by being held aboutthe platen III. The paper carriage is of the front-feed type such asdescribed in British Patent No. 382,623 oi' 1930.

i In this type of carriage, a record sheet is maintained about theplaten for a long series of enare inserted and removed from time totime. To

facilitate such insertion and removal, a frontfeedmeans is providedwhich is automatically controlled and power operated so that it/willmove from closed to open throat position and vice versa without anyattention on the part of the operator. mechanism are shown at 28 and 28'in Fig. 1.

Both positive and true negative totals may be taken directly from themain registering mechanism or crossfooter," and, for thispurpose, themachine is provided with a total-taking control means usually governedby the total key T. When a positive total is taken, the registeringmechanism must be in add position so that the total may be taken fromthe add pinions. When the total is negative, the'registering mechanismmust be in subtract position for taking the total in order that saidtotal may be taken directly from the subtract pinions. A suitablefugitive 1 mechanism is provided for insuring that the totals will benumerically correct, said mechanism being of the type illustrated inRinsche No 1,172,484.

Portions of the front-feedv riage moves-"to the deposit column where itcycles automatically to change said crossfooter from subtract to addposition. Thereafter, the carriage tabulates to the balance column wherea total is automatically taken and printed. After the taking 'of thistotal, the carriage is automatif cally returned across the machine bythe carriage Before describing the mechanism of the present i invention,.it will be helpful to first describe an example of the work that may beperformed in order that the purpose of the various mechanisms may bemore easily understood when they are later described.

Examples of work In Fig. 6, there are illustrated four typicaltransactions that may arise in bank posting, these transactions beinglettered A, B, C and D.

Transaction A involves the posting of two checks against a customersaccount, leaving a positive balance. The transaction starts with thepaper carriage in column 1 where the customers old balance is entered.This is called the pick-up column. The operator indexes the customersold balance of $100.00 by depressing the proper amount keys, after whichhe depresses the regular motor bar M to cause the machine to be given acycle of operation. During this cycle, the amount of the old balance,$100.00, is entered positively in the crossfooter and, near the end ofthe cycle, the paper carriage tabulates to its column 2 position where acheck is to be posted. Since the check must be subtracted, the machinemust be in subtract condition and, in the present machine, the papercarriage automatically conditions themachine for subtraction. The checkof $50.00 is then indexedon the amount keys and the. motor bar M isagain depressed to cause a machine cycle during which the amount of thecheck, $50.00, is subtracted from the crossfooter Near the end of thecycle, the carriage tabulates to column 3, where the machine is againconditioned for subtraction by the carriage, this being a second checkcolumn. The amount of the second check, $25.00, is indexed on the amountkeys. However, since no deposit is to be entered, there is no occasionfor stopping the carriage in the deposit column. It can go directly tothe balance column as far as the operator is concerned. At the end ofthe cycle in column 3, the machine will be in subtract condition. Sincethe next operation is the taking of a new balance, said machine shouldbe in add condition because the balance is positive. In the presentinvention, the operator depresses the special motor bar M and releasesit immediately which causes the machine to be given a cycle in column 3where the check of $25.00 is subtracted from the crossfooter, afterwhich the carreturn mechanism so that it'will be in position for a newtransaction and, during this return, the front-,feed throat is opened sothat the operator may remove the customers ledger sheet and insertanother.

In a similar transaction involving the posting of only one check, theoperator would depress the special motor bar M in column 2, which wouldcause the carriage to move directly to the deposit column where the sameautomatic operation would take place as above described.

Transaction B involves the posting of one check and the entry ofA onedeposit, leaving a positive balance in the customers account. Theoldbalance of $100.00 is indexed as before, the regular `motor bar M isdepressed, the machine cycles to add the old balance of $100.00 in thecrossfooter, and thecarriage moves to column 2 where the amount keys aredepressed to enter the amount of the checkr $25.00. Since thistransaction involves the entry of a deposit, the operator must have thecarriage stop in the deposit column. Accordingly, with the presentinvention, he again depresses the special motor bar M', but

y he holds said bar depressed a short time, with the result that thepaper carriage will move directly to the' deposit column and stop. Thecycling of the machine will be stopped also. The operator then indexesthe amount of the deposit, $50.00, on the amount keys and` depresses theregular motor bar M. The machine isy given a cycle of operation duringwhich the crossfooter tumblesA from subtract to add position and thedeposit of `$50.00 is added in said crossfooter. Near the end of themachine cycle. the carriage tabulates to the balance column where anautomatic total-takingscycle occurs to take the new total, after whichthe carriage is returned across the machine and the throat opened asabove described..

Transaction C involves the posting of a check that overdraws thecustomers account even though a depositr is also entered. 'I'heoperations proceed as before, that is, the amount of the old balance,$100.00, is indexed in the pickup columnf and the regular motor bar isdepressed, after whichthe carriage moves to the column '2 position. Thecheck of $200.00 is then indexed and, since a deposit yis to be postedmext, the operator depresses the special` motor bar M' and holds itdepressed a short time. The check of $200.00 is subtracted from thecrossfooter dur ing the machine cycle, and the crossfooter goesnegative. Near the end of the cycle, the carriage moves directly to thedeposit column where it stops and no further cycling of the machineoccurs., AThe operator then indexes the amount of the deposit, $25.00,on the amount keys and depresses the regular motor bar M, which causes amachine cycle during which the crossfooter changes from subtract to addposition and the deposit of $25.00 is added in said crossfooten Thecarriage then moves to the balance column. Normally; as vabovedescribed, when vthe carriage reaches the "balance column, a total isautomatically taken, but, in transaction C, the crossfooter contains anegative total and, with the mechanism of the present invention,operation of the machine is stopped. The operator immediately knows thatan overdraft has occurred. He may then stop the posting, strike out theentires and send 'the check for $200.00 through N. S. F. channels. If hedesires to print the negative total, he may do so by moving the subtractlever to subtract position, and depressing the motor bar M to give themachine a spacing cycle to get the crossfooter to subtract position. Hethen depresses the total'key and causes a total taking cycle which willcause the negative total to be printed, after which the carriage willreturn across the machine and the throat be opened as before.

Transaction D involves the posting of a check that overdraws thecustomers account but no deposit is entered. 'I'he old balance of$100.00 is indexed on the amount keys in the pickup column, and the mainmotor bar M depressed, whereupon the machine cycles to add the balancein the crossfooter and the carriage moves to column 2. The amount of thecheck, $200.00, is indexed on the amount keys but, since the operatordoes not need to enter a deposit, he depresses the special motor bar Mand releases it immediately. This causes a machine cycle during whichthe $200.00 is subtracted from the crossfooter which goes negative,after which the carriage moves directly to the deposit column where themachine is given a cycle automatically to change it to add condition,after which the carriage moves to the balance column, but, since theregister contains a negative total, no automatic machine cycle occurs.The operator is again notified that an overdraft exists and he canobtain it, if he desires, as above explained.

The general structure of the machine and typical examples of work havingbeen described, an explanation of the mechanism will now be given inmore detail.

Control of carriage movement The special motor bar M' controls themovement of the paper carriage from the column in which said bar isdepressed to the deposit co1- umn in the following manner:

Depression of the special motor bar lowers its stem 29 (Figs. 2 and 3)which is slidably supported at its upper end by a stud and slotconnection 30 and which is pivoted at its lower end to a crank arm 3|.Pivoted at 34 on the stem 2l is a bell crank 33 which moves bodilydownward with the stem as the same is lowered. The bell crank 33 isconnected to the rear lever 36 of the main motor bar mechanism, saidlever 36 being connected to another lever 31 and the two levers 33 and3l being moved when the main motor bar M is depressed. A stud 32 carriedon the stem 23 of the special motor bar M and engaging the upper edge ofthe forward arm of the bell crank 33 prevents the bell crank fromrocking clockwise about its pivot 34 as the special motor bar M' isdepressed so that the downward movement of the bell crank 33 as thespecial motor bar M is depressed causes the main motor bar M to bedepressed at the same time. The bell crank 33 also serves as aninterlock to prevent depression ofthe special motor bar M' while themain motor bar is in depressed position after being depressed alone.When the main motor bar is depressed alone, the bell crank 33 is rockedcounterclockwise about its pivot 34 so that its lower arm moves over theupper surface of the square head oi' stud 30. If, then, an attempt ismade tor depress the special motor bar M before the main motor bar Mreturns to normal, the stem Z3 cannot move downward because the end ofthe vertical arm of bell crank 33 is blocked by stud 30. The bell crank33 acting in conjunction with the stud 30 serves to prevent immediatefull restoration of the special motor bar M if the operator withdrawsmanual pressure from said motor bar immediately after depressing it.Whenthe special motor bar M is fully depressed, it causes the main motorbar M to be depressed sufficiently for the hook 10 pivoted on the lever36 to be moved by its spring 'Il to engage under the stud 12 on therearward portion of the lever 3l and latch the main motor bar indepressed position. If manual pressure is now removed from the specialmotor bar M', its spring 29l (Fig. 2) raises it together with the pivot34 of the bell crank 33 somewhat. However, the latch 10, 12 prevents therear end of the lever 36 from rising, and the bell crank 33 is,therefore, rocked counterclockwise about its pivot 34 until its lowerarm engages against the stud 30 which then holds the special motor bar Min a position intermediate its fully 'depressed position and its fullyrestored position until the latch 10, 12 is tripped to permit both motorbars to restore fully. When the main motor bar is released, the specialmotor bar will be carried upward with it as it returns to normal.

Depression of the special motor bar M controls a skip-tabulating shaft40 (Fig. 2), which is the same as the shaft |53 in Rinsche No.1,580,534. When this shaft 40 is rocked slightly counterclockwise fromthe position of Fig. 1, it sets a skip-tab" mechanism that is thenlatched in position. As previously mentioned, during normal tabulatingmovements, the tab bar 26 is rocked near the end of a machine cycle torelease the paper carriage and said bar immediately returns to normal toarrest the carriage in the next columnar position. But when theskip-tab" mechanism is set, as above mentioned, it acts, when the tabbar is rocked near the end of the machine cycle, to latch said tab baragainst-return to normal. Accordingly, the carriage will continue tomove until it arrives in a column where a carriage cam releases the tabbar, whereupon said tab bar returns to normal and arrests the carriagein the predetermined column. In the present invention, said controls areset to arrest the carriage in the deposit column.

Since, in some cases, the special motor bar M is depressed andimmediately released and, in other cases, depressed and held down ashort time, provision must be made for proper control of the skip-tabmechanism under both conditions.

Fixed to the shaft 40 is an arm 4| on whose free end is pivoted a pawl42, spring urged clockwise by spring 42. In the normal position of theparts shown in Fig. l, the pawl limits against a stud 43 on an extensionof the stem 23 of the special motor bar. The pawl 42 has an upstandingarm or finger 43 adapted, under certain conditions, to be positioned inthe path of a stud 4l (Fig. 2) on the rear arm of a three-armed lever 43pivoted at 43. The lower arm of this threearmed lever has a cam surface5| positioned in the path of a stud 52 on the full-stroke sector 53.During a machine cycle, this full-stroke sector is rst rockedcounterclockwise from the position of Fig. i and then returnedclockwise. Near the aa'rasosl end of the nrst half c'ycle the stud I2engaes the cam suri'ace Il and rocks the three-armed lever 42 clockwise,said lever 4I being returned clockwise by a spring during the early partof the last half cycle, or return stroke, of the machine.

The parts normally occupy the position shown in Fig. l and, if themachine is cycled by means vof 'the main motor bar M, the'three-armedlever moves away from pawl 42. The latter is then' rocked clockwise byits spring until it limits against the stud 4l on arm 4i, in whichposition,

the finger 46 is in the path of the stud 441 on the three-armed lever42. As the machine is cycled, and near the end of the ilrst haii' cycle,the three-armed lever 42 is rocked clockwise whereupon stud 41 engagesthe linger 42 and rocks the arm 4i counterclockwise to set the skip-tabmechanism, the latter being then latched in set position. This does notcause the carriage to move immediately, but, when the tab bar is rockednear the end oi' the machine cycle, the skip-tab mechanism holds the tabbar and causes the carriage to move to the deposit column as aboveexplained.

As the arm 4i rocks counterclockwise during the above operation, itstree end moves in an arc toward the rear and the parts finally move tothe position of Fig.v2 where'the stud 42 occupies a slot in the pawl 42.During the second half of the cycle, the three-armed lever 42 returns tonormal and stud 41 moves away from finger 42. When the skip-tabmechanism is released at the time the carriage arrives in the depositcolumn, arm 4i returns clockwise to normal position, at whichl time itstree end moves forward slightly in an arc so that the edge of the pawl42 is again in the path of the stud 42 on the stem 22 of t-he motor barM.v Accordingly, when the motor bar M returns to normal, the stud 42engages pawl 42 and rocks it to the position of Fig. 1.

When the motor bar M' is depressed and manually held fully depressed ashort time, that is, past the hali.' cycle, the parts operate as aboveexplained and no further description is necessary. But, if the operatorwithdraws manual pressure from the special motor bar M' immediatelyafter fully depressing it, the motor bar at once returns part way towardnormal position, as already explained. To insure that the tlnger of thepawl 42 will be held in the path of the stud 41 whether the specialmotor bar is permitted to rise to its partially restored position orheld in the fully depressed position slightly past the hall.' cycle ofthe general operating means, the arm 4I carries a stud 45 positionedwithin a broad notch in the upper rear edge oi' the pawl 42 to stopclockwise movement of the pawl 42 at the point where the end of the ngeris squarely in the path oi the stud 41. Also, the lower edge of the rearportion of the pawl 42 is formed with a deep notch so that thecounterclockwise movement of the arm 4i by the action of the stud 41 onthe linger 42 will not be hindered by the pawl 42 striking the stud 42whether the motor b ar stem 22 is in its partially restored position orits fully depressed position at the end of the half cycle. According- 5'ly, the skip-tab mechanism will'be properly set, both when the motor baris depressed and held depressed for a time and when it is depressed andreleased immediately.

An interlock is provided for' preventing depression ot the special motorbar M in columns where said bar should not be depressed. For thispurpose a lever 2l (Fig. 1i is pivoted `at 2l to the machine frame. Thislever has an upper extension carrying a stud 22 adapted to engage anotch. in the stem 22 of the motor bar M. The other end of lever 60 ,hasa lug 24 adapted tojbe engaged by a cam bar 26 mounted on the papercarriage. In the columns where the special motor bar M' should be freefor depression, the cam bar 62 rocks the lever 20 clockwise to disengagethe stud 22 trom the notch 82 in the motor bar stem. In all othercolumns, the lever 2l is free to be urged to latching position by itsspring 21 which causes a stud 62 to enter notch 22, thereby -preventingdepression of the motor bar M. In Fig. l. the parts are shown in theposition they occupy in one of the columns where the motor bar M' isfree for depression.

Control of automatic machine cycles 'Ihe manner in which the specialmotor bar M' is manipulated determines whether or not the machine shallbe given an automatic cycle in a subsequent columnar position of thecarriage, namely, the deposit. column.

When the special motor bar M' is depressed, it carries the main motorbar M down with it, and the two bars are latched down as previouslyexplained. The counterclockwise movement of the lever 21, acting througha spring 12, raises the control link 12 to close the motor switch,

engage the clutch, and cause the machine to be given a cycle ofoperation. Near the end of the tlrst half of the cycle, the stud 22 onthe fullstroke sector B2 engages a projection on the link 12 and movesit downward to normal. This opens the motor switch and disengages theclutch, the machine going through its second half cycle under the urgeof springs 22. The downward movement of link 12 tensions the spring 12*because the motor bars are still latched down, and the tension ot thespring tends to again raise the link 12. Such movement of link12 isnormally prevented, however, by the blocking latch 12b (Fig. 8) asdescribed in Muller 1,397,774.

This latch moves over a stud 12 on the link 12 to temporarily hold downthe link, the latch being normally released by the stud 12 carried bythe rear end of the lever 21 acting on a forward arm 12e of the latchwhen the lever 21 moves clockwise when the motor bar M returns tonormal. For a repeat cycle, said latch 12b is released by a carriageroll that acts when the carriage reaches its next position and w'hilethe repeat hook 12 keeps the motor bar latched down, all as described insaid Muller patent and as explained in more detail later. Normally, whenno repeat cycles are wanted, the repeat hook 12 is released near the endot the machine cycle and prior to the time when the latch 12h would bereleased by a carriage roll for a repeat cycle, whereupon the tension ofspring 12* restores the motor bar to normal and no second cycle ofmachine operation occurs. But, if the repeat hook 12 is n ot released,then when the paper carriage moves to a position where a carriage rolleffects the release of the latch 12".

` 'the link 73 will rise again and close the switch and clutch to causea second machine cycle.

The motor bars, as well as the keys of the machine, are normallyreleased near the end of each machine cycle by a restoring mechanismshown in Figs. l and 2. This mechanism includes a restoring bail 00 thatextends across the machine in position to engage the key release latchesIDI for the key latching plates of the various banks of the machine. Oneof the side arms that support this bail extends upward as shown in Fig.1 to a position such that it may, when rocked, engage the end of a latchslide 98, having a projection 99 adapted to engage the end of the repeathook 10. This restoring means is normally rocked far enoughcounterclockwisenear the end or' the machine cycle to engage both thekey releasing latches I! and the motor bar latch plate 98, to not onlyrelease all the keys but to release the motor bars as well. However,said restoring means may be controlled so that it is moved only farenough to release the keys Without releasing the motor bars. Suchcontrol governed automatically by a repeat slide positioned by the papercarriage is described in Muller No. 2,087,542, but in the presentmachine the control of the restoring mechanism depends mainly upon themanipulation of the special motor bar M.

rihe releasing means is actuated near the end of the machine cycle by athree-armed member 89 pivoted at 90 (Fig. 2) and urged clockwise by aspring (not shown) In the normal position of the parts, shown in Fig. l,a projection on the full stroke sector 58 engages an arm of thethreearmed member 39 and holds it counterclockwise against the urge ofits spring. During the rst half of the machine cycle, the full-strokesector moves counterclockwise which releases the three armed member 89which thereupon follows the full-stroke sector in a clockwise direction.The rearwardly projecting arm of the threearned member 89 carries twopawls 9i and 92 adapted to uengage a roller stud 95 on the side arm Q6of the restoring means. are of different size. rI'he arrangement is suchthat, if, during the clockwise movement of the three-armed member, bothof the pawls pass below the stud GQ, so that the larger will engage saidstud upon the return of the three-armed lever, then the restoring meanswill be rocked its full extent and both the keys and the motor bars willbe released. But, if movement of the arm S9 is limited so that only thesmaller of the two pawls passes below the roller stud, then said4restoring means will be rocked a shorter distance, which distance issufficient to restore the depressed keys 'but not to release the motorbar hooi; l0.

The special motor bar M carries a stud 80 on a depending arm 85 whichstud engages the cam edge of a lever 82 pivoted at S8 and urgedclockwise by a spring 815 (Fig. 3). The parts normally occupy theposition shown in Fig. 1, where stud 8@ engages the cam edge of lever 8labove a notch 00a in said lever. When the special motor bar isdepressed, stud 80 moves along the edge of the member 8! to a positionbelow the noto S.

Lever 02 extends downward and its lower end is hook-shaped to provide apocket 86 and an upwardly projecting lug 87. Both when the special motorbar is in normal position andrwhile it is held fully depressed, themember 82 occupies the These two pawls of the path of a stud 88 on thethree-armed member 89.

When the motor bar M is depressed and held depressed during the ilrsthalf cycle, the stud moves below the notch 80'l in the member 82 andholds the latter in the position of Fig. 3 so that, when the three-armedmember 89 moves clockwise during the first half cycle, the stud 88 movesinto the slot 8S in the member 82. This allows the member 89 a fullclockwise movement with the result that both pawls 9| and 92 pass theroller so that, upon counterclockwise return movement of the three-armedmember 89 during the latter half of the cycle, the restoring mechanismis operated for its full movement to release both the keys and the motorbar. The motor bar M' need be held depressed only long enough to permitthe three-armed lever to complete its clockwise movement which it doesduring the rst hali cycle. Thus, in the present invention, when themotor bar M is depressed and held depressed a short time with the papercarriage in either of the check columns, the machine will go through thecycle to perform the operations set up in the check column, after Vwhichthe cycle will stop and, for reasons previously explained, the carriagewill tabulate to the deposit column and stop. l

If, however, the motor bar M is depressed and immediately released, thestud 80 will be in a position opposite the notch 805 in member 82. Thisallows the member 82 to be positioned so that, when the three-armedlever 89 rocks clockwise, its stud 88 will engage the end of projection8T. This blocks full movement ofmember 89 so that only the paw] 92passes the roller 95. The result is that, upon the return movement ofmember 89, the release mechanism will be moved only far enough torelease the keys and not far enough to release the motor bars. Theresult is that the machine will be given another cycle of operationautomatically but, in order to understand exactly what happens, thesequence of operations must be followed through.

The motor bar M' is depressed and released immediately with the carriageinone of the check columns. The machine goes through a cycle to performthe necessary operation in this column and, near the end of the cycle,the paper carriage moves to the deposit column. Near the end of saidmachine cycle, the pawl 92 on three-armed member 89 rocks the releasingmechanism but does not release the repeat hook l0. This occurs prior tothe time the carriage reaches the deposit column. The machine isposition of Fig. 3 where the lug 81V is rearward 75 thus set for arepeat cycle but this cycle does not occur until the carriage reachesthe deposit column, owing to the presence of the blocking latch 13bheretofore described. But, when the carriage reaches the deposit column,the machine immediately goes through a cycle. As said carriage arrivesin the deposit column, a cam roll (Fig. l) acts as described in Muller1,397,774 to rock a repeat lever 06 which, in turn, rocks a bell crank|06* (Fig. 5) to move a repeat slide |01 rearward. Rearward movement ofrepeat slide |01 causes its hooked end |08 (Fig. 8), to release theblocking latch 'I3b whereupon the link 13 rises to give the machineanother cycle. During the iirst half of this automatic cycle, thethree-armed member 89 is again rocked clockwise and, if the motor bar Mwere still held down, the parts would be set for a third automaticcycle. Another cycle is wanted for a positive total but not for anegative total.

While the paper carriage is in the deposit column, the carriage roll|88, which moved the bell crank |08n andL slide |81 to trip the latch13'. as the carriage moved into said column, holds the bell crank |80lin sucha position that a second arm |80 of said bell crank engages astud 82" on a rearwardly 'extending arm 82 of the mem- 'ber 82 and holdsthe latter in a position such oted at I I0 and urged counterclockwise byspring ||8. This rocks lever ||8 clockwise, the spring ||0 beingstrongerthan spring ||0. Clockwise movement of lever I|8 causes itsnotched end |20 to move upward and become disengaged from a lug |2| on arearward projection of a lever |22 pivoted on shaft |28 and urgedclockwise (Fig. l)

' by a strong power spring |24. When said lever |22 is` thus released bythe carriage acting through the train of parts just described, it ismoved bythepower spring from the position of Fig. l to that of Fig. 5.This power spring concemed, no repeat cycle will occur after theautomatic cycle with the carriage in the deposit column. However, aswill be presently explained, at the end of said cycle the paper carriagetabulates to the total-taking column and another automatic operation maytake place under control cf mechanism that will be described inconnection with total taking.

Thus, the special motor bar M' controls mechanism such that, if said baris depressed and held depressed a short time, the machine will gothrough only one cycle, which is the cycle in the column where the baris depressed, after which the carriage will move to the deposit columnand stop. But if said motor bar M is depressed and instantly released,the machine will kgo through the cycle in the column where said bar isydepressed, the carriage will move to the "deposit" column, the machinewill go through another stitutes the power means for moving thetotaltaking control means to total-taking position.

Lever |22 has an upwardly and forwardly projecting arm |20 adapted toengage a stud |21 on a 'If-shaped lever |28 that is a part of theBurroughs total control means and which is fixed to the shaft |23.Referring to Fig. 4, said shaft |23 extends across the machine and ithas an arm |20 fixed to its right-hand end, which arm is connected by alink |3| to the bell crank |30 carrying the'total key T. When the arm|22 (Fig. 5) is moved by the power spring |24 the cycle automatically,and the carriage will then move to the total-taking or "balance" column.

Automatic total-taking mechanism When the paper carriage moves into thetotaltaking or "balance" column, the total-taking control means isautomatically conditioned for total taking and the machine goes througha total-taking cycle automatically, provided the total is positive. l

The machine is equipped with a mechanism for eliminating one of thespacing cycles which were at one time necessary on the Burroughsmachine, said mechanism being described in Muller 1,844,070. It is alsoequipped with a mechanism such as shown in said patent for causing themachine to be given a cycle of operation when the :letal-taking means isconditioned for total tak- As the carriage moves into the balancecolumn, a large carriage roll |08 similar to the large roll 33 shown inFig. 2 of Muller No. 2,087,542 en y gages the repeat control lever |00to move the repeat slide |01 from the full-line position of Fig. 5 tothe dotted-line position of said figure. This full rearward movement ofthe repeat slide normally causes a power means automatically to move thetotal-taking control means to totaltaking position and movement of thelatter causes an automatic machine cycle as will now be explained.

When the repeat slide |01 is moved rearward to the dotted-line positionof Fig. 5, an upper arm |08 thereof engages one arm of a bail-like itengages a lug ||1 on another lever ||8 also piv- .spring |39.

lever |28 is moved from the dot-dash to the full-- line position of saidfigure. This rocks'the shaft |23 clockwise in Fig. 5 which iscounterclockwise in Fig. 4. Such movement of shaft |23 in Fig. 4 rocksthe bell crank |30 clockwise which is the same direction of movementgiven it when the total key is depressed. 'I'he rocking of shaft |23also causes the spring |23* (Fig. l) to move the link -|23b rearward asdescribed in fMuller 1,844,070. 1A stud |23 on said link rocks bellcrank |23d clockwise which acts through a spring |23 (Fig. l) to operatethe motor switch and clutch ,and causes the motor drive to give themachine a cycle of operation.

Thus, when the carriage moves into the balance" column, it causes apower means to move the total-making control means to total-takingposition and the movement the the latter causes the power drive of themachine to give said machine a cycle of operation during which the totalis taken.

'Ihe total-taking control means `and its power spring are returned tonormal as follows:

During the first half of the machine cycle in -total taking, the stud 52on the full-stroke sector 03 engages the cam edge 5| on the three-armedlever 48 and rocks it clockwise as previously explained. Pivoted to theupper and forward arm |30 of the three-armed lever 48 is a pawl |36(Figs. 2 and 5) having a hook portion |31 and a notch |38, the pawlbeing urged clockwise by a When the lever 48 is moved clockwise byfull-stroke sector 53 during the first half of each cycle, the pawl |30is moved to the right, but, as long as the total lever |20 is in itsnormal left-hand position, this has no effect because the stud |21 onlever |28 engages the top of the hooked end of pawl |30 and holds itdown so that shoulder |30 will not engage stud |4|. But, after the totallever |20 has moved to the right for a total-taking cycle, and whenlever 48 moves pawl |30 during the first half of the total-taking cycle,the notch |38 of pawl |30 engages a stud |4| on alatch |42 and rockssaid latch clockwise against lieved and when the latch |42 is releasedboth said spring and its anchor |46 are free for move ment. A relativelylight spring |50 (Fig. 2) then acts to swing lever |22 counterclockwiseand said lever, acting through spring |24, swings the anchor lever |46counterclockwise, the movement of the parts being limited by engagementof lever |46 with the stud 52 in the full-stroke sector 53 which, at thetime, is in its lower position. As the sector 53 returns to normalduring the second half of the cycle, the anchor lever |46 follows stud52 and moves to the dot-dash position of Fig. 5 which allows lever |22to move to its normal position under the urge of spring |50, As thethree-armed lever 48 is rocked clockwise during the first half of themachine cycle in total taking by the engagement of stud 52 on thefull-stroke sector 53 with the cam edge 5| on the lever 48, its upperforward arm |35 engages a depending nger |53 of lever I|4 and rocks thelatter counterclockwise to move its rear end above latch ||3 whichthereupon snaps over the end of said lever i I4 to hold it in position.The latch I3, when it was tripped by the slide |01, was allowed to moveback toward latching position because the large roll on the carriagepasses slightly over the high point of its lever so that slide |01 ismoved fully rearward and then allowed to come back slightly. Therestoration of lever I I4 also releases the lever IIS which is thereuponmoved by its spring so as to move its notched end to a position suchthat, as said lever |22 returns to normal during the latter half cycle,the notched end |20 will snap over the lug |2I on lever |22. Thus, leverI' 22 is again latched in its normal position. During the second half ofthe total-taking machine cycle the threevarmed lever 48 is released andit returns counterclockwise to normal under the urge of its spring.rlhis moves the hooked pawl |36 forward and releases the latch |42 whichtends to return to normal under the urge of its spring. Said latch |42cannot return immediately because the anchor lever |46 occupies thedotdash position oi Fig. 5. Instead, the edge of said latch Iii?? restson the lug on the end of lever |46. During the rst half of the nextmachine cycle, the stud on full-stroke sector 53 rocks the anchor leverIdil clockwise until the latch |42 snaps over it. This retensions thespring E24 and thus recocks the power means that operates thetotaltaking conti l means.

" im "1s retensioned and the link |23b during the total-taking l) whichis rocked by ng mechanism of the machine li."u`ier ,844,070.

shaft |23 and the total key cannot start ti ir return to normalimmediately when the lever and arm |26 begin to move ward their normalpositions. A roller |28f :'Fig. 5) on the lower end of the lever |28cooperates with an arcuate flange 53a on the full stroke sector 53 toprevent movement of the lever |28, shaft |23 and total key during cyclesor" operation of the machine. At the beginning or" the cycle ofoperation, the full stroke sector 53 rocks counterclockwise and carriesthe ilange 53P- down on one side or the other of the roller 3288,depending on the position of the lever 328, the shaft 23 and the totalkey at the time, and prevents these parts from changing their positionsduring the cycle, but as the full-stroke sector 53 returns clockwise toits normal position at the end of the cycle, the lower end of the:Ilange 53a is raised above the roller |28 so that the lever |28, shaft|23 and the total key can be restored atthe end of the total takingcycle by the usual spring corresponding to that numbered |23* in theMuller Patent 2,087,542.

Control of automatic machine cycles by sign of total When the carriagemoves into the balance column with a negative total in the mainregistering mechanism or crossfooter, the machine will not beconditioned for total taking nor will an automatic machine cycle occur.This is true no matter whether the preceding operation involved enteringa deposit in the deposit column or whether the machine went through anautomatic spacing cycle in said deposit" column.

Referring to Fig. 4, a three-armed lever or setting member |60 isprovided which is pivoted at |6| anc. which may be set in either of twopositions depending upon the sign of the total in the crossfooten Saidmember is releasably held in the position to which it is set by a springdetent |62. Its position is determined by cams, such as the cams I6 andI1 (Fig. l) on the-highest order add and subtract pinions in the mannerdescribed in detail in Pasinski 1,778,506 and Muller 2,087,542. When thetotal in the crossfooter is positive the setting member occupies theposition illustrated in full lines in Fig. 4 whereas, when thecrossfooter goes negative, the member is moved counterclockwise to thedot-dash position of Fig. 4. The reverse action takes place when thecrossfooter changes from negative to positive condition.

The upper arm of the member |60 carries a stud |63 operating in a slot|64 formed in the forward end of a link that is connected to the memberI4ln which, after the position of the subtract lever is changed, ismoved to add or subtract position as the case may'be during a machinecycle. The slot |64 has two notches in its upperl edge as shown in Fig.4.

When the total is positive the member |60 is in its forward full-lineposition of Fig. 4. If the add-subtract controlling means is in addposition at that time, the link |65 occupies its rearmost position andthe stud |63 is in the forward notch of slot |64. The parts are then inwhat may be called normal or nonlocking condition.

When the paper carriage moves into the balance" column, the add-subtractcontrolling means is always in add condition either as a result of adeposit entry in the preceding column or as the result of an automaticspacing cycle.

If, with the add-subtract controlling means in add condition, the totalis negative, the member |60 occupies the dot-dash position of Fig. 4, inwhich position the stud |63 contacts the upper edge of the slot |64between the two notches in said slot, and the link |85 is raised asshown in dot-dash lines in Fig. 4. This raising of the link |65 isutilized to prevent the automatic total-l taking cycle in the balancecolumn. In actual operations, the total goes negative at the time acheck is subtracted, and it is the movement of link |65 at the time theadd-subtract controlling means is moved to add condition that moves theparts to the position above explained. The control of the automaticcycle is as follows:

The upper edge of link |65 contacts a. stud |66 on an arm |61 which ispart of a yoke-like member |68 pivoted at its top as shown in Fig. 4 andurged counterclockwise by a spring as will be presently explained. Thisyoke extends across the machine and, at its other side, has an integralnegative, the movement of the link.|66 (Fig. 4)`

rocks the bail |68 clockwise in Fig. 4, or counterclockwise in Fig. l.This moves the shoulder of arm |16 over the arm |16 and blocks movementof lever |22. Consequently, when the carriage arrives in the balance"column with a negative total in the cross-footer and when said carriagereleases the mechanism for an automatic total-taking cycle, said cyclewill not occur and the operator will know that a negative total exists.Such notification will occur before a total is taken.

The above blocking of the machine against an automatic cycle also locksthe total key T. This takes place through the medium of a lever |1|(Fig. 4) yieldingly connected by a spring |10 to the arm |69 of bail|68. When said ball is rocked clockwise under the conditions aboveexplained, the upper end of arm |1| is moved under a stud |12 on thebell crank |30 carrying a total key, thus blocking depression oi' saidkey. This takes place against the tension of a spring |1| that urges arm|1| clockwise and which is the spring heretofore mentioned that urgesthe bail |66 counterclockwise in Fig. 4.

When the machine is blocked against opera-- tion, it may be desirable,nevertheless, to take and print the negative total. This may be done asfollows:

The operator moves the subtract lever |4 for-y ward to subtractposition. I'his conditions the machine so that the "crossfooter" will betumbled to subtract position during the next machine cycle. But themovement of the subtract lever does not move the link |66 forwardbecause said link is connected to a portion of 'the addsubtractcontrol'means that moves as the crossfooter frame is tumbledfduring therst half o f said machine cycle. The operator then depresses the regularmotor bar M, which causes a machine cycle during which the "crossfooteris tumbled from add to subtract position during ward so that therearmost notch in the slot |64 The link |66 is in register with the stud|63. can then move down and, in so far as link |66 is concerned, thebail |66 will be released for counterclockwise movement. If the bail |68were to move to released position immediately, its arm |15 would releasethe arm |16 of the power operated member |22 for operation by the strongspring |24 and it might be thought that the machine would be conditionedfor total taking during the early half of the spacing cycle. But thisdoes not occur for the following reason:

Referring to Fig. 2, it will be observed that, in a normal position ofthe parts with the lever |22 latched bythe latch ||8, the arm |16 isslightly below the shoulder of the arm |15 so that the bail |68 is freefor movement. When the paper carriage went into the balance column thelatch ||8 was released, whereupon the strong spring |24 pulled the lever|22 a short distance to cause the arm |16 to engage the shoulder on arm|16. The spring |24 is so strong that a very considerable frictionalresistance between |16"andV |16 is present. This prevents the lightspring |1I (Fig. 4) from pulling the bail- |68 to released position whenit is released by link |65 as above explained. The -threearmed lever 48,which is rocked clockwise by the stud 62 on the full-stroke sector 53,has a pin and slot connection (Fig. 2) with a bell crank |8| pivoted at|82. The forwardly extending arm |83 of this bell crank has a cam edgeengaging a stud |84 on an extension of the member |22. Near the end ofthe tlrst half of the spacing cycle, the stud 62 on the full-strokesector rocks the three-armed lever 48 clockwise which rocks thev bellcrank |8| counterclockwise and the cam edge of arm |83 rocks the lever|22 slightly counterclockwise against the tension of the spring |24,there being sufcient force to do this owing to the fact that thefull-stroke sector 63 is moved directly by the motor. Consequently, thefriction contact between the arms 16 and |16 is relieved, and the bail|68 moves to released position. The above movement oiilever |22 issuilicient to permit the latch ||8|20 to snap back to position behindlug |2| on the member |22, said latch being released during the firsthalf of the spacing cycle by the clockwise movement of the three-armedlever 48 as described in connection with the restoration of these parts.The return of latch ||8|20 to latching position locks lever |22 and thusprevents the power spring |24 from moving the total-taking control meansto totaltaking position.

Since the operator depressed the regular motor bar for the spacingcycle, the machine will stop after going through said cycle and thecarriage will not tabulate because the tabulating mechanism is disabledor normalized automatically as the carriage moves into thebalancei'column as disclosed in the Muller Patent 2,087,542 and isreenabled only when the total-taking control means is set for totaltaking as also disclosed in said Mullerpatent. Consequently, thecarriage will remain in the balance column until the machine' is cycledwith the total key depressed.

'I'he operator continues to hold the subtract lever in subtract positionand then depresses the total key, which causes the total-taking controlmeans to be conditioned for total taking and the machine to be given atotal-taking cycle as in Muller 1,844,070.

If, at thetime he enters a check, the operator knows that it will causean overdraft and, if he nevertheless wants to obtain and print thenegative total, he can speed up the operation of the machine byoperating it in a modiiled manner as follows: After he has indexed thecheck on the amount keys, he puts his finger on the subtract lever. tohold it in subtract position and then depresses the special motor bar M'and releases it immediately, continuing to hold the subtract lever insubtract position. The machine will go through a cycle in the checkcolumn and subtract the check from the crossfooter, thereby causing thelatter to go negative. Near the end of the cycle, the carriage will moveto the deposit" column where the machine will go through kan automaticspacing cycle, the operator continuing to hold the subtract lever insubtract position. This is an idle cycle since the machine is already insubtract condition with the total in the crossfooter" negative. Near theend of this automatic cycle, the carriage will tabulate to the balance"column. The operator continues to hold the subtract lever in subtractposition and when the carriage reaches the balance column the machinewill go through a total-taking cycle automatically because the machineis in subtract condition and the total in the crossfooter" is negativeso that the parts heretofore explained will be released and the powerspring |24 will condition the machine for total taking and cause anegative total to be taken. This mode of operation can be used when theoperator knows there is a negative total and when he desires to print itnevertheless.

It will be obvious to those skilled in the art that the principles ofthis invention may be applied to other machines and that many variationsin the details may be made without departing from the spirit and scopeof the invention as denned in the appended claims.

I claim:

1. A calculating machine of the class disclosed having a motor operateddriving means. drive control means conditionable to cause said drivingmeans to give said machine a cycle of operation, means operable tocondition said control means, manipulative means, including adepressible motor bar, for operating said conditioning means,

means for retaining said conditioning means in operated position whenoperated, and means movable automatically at a predetermined time in themachine cycle to 9. position to release said conditioning means fromsaid retaining means, f

said manipulative means including elements conditioned by depression ofsaid motor bar and continued manual pressure thereon beyond saidpredetermined time in the machine cycle to permit said releasing meansto move to said releasing position and release said conditioning meansto return to said unoperated condition without causing a further machinecycle, said elements being conditioned by depression 'of said motor barand withdrawal of manual pressure therefrom prior to said predeterminedtime in the cycle initiated by said depression to prevent said releasingmeans from moving to said releasing position in said machine cyclewhereby said conditioning means is retained by said retaining means inits operated position to condition said drive control means to cause anautomatic further cycle of operation of said machine.

2. A calculating machine of the class described, having a motor operateddriving means, manipulative means conditionable to two out-of-normalconditions, drive control means conditionable by said manipulative meansto cause said driving means to give the machine a cycle of operation,means normally movable during each machine cycle initiated by theconditioning o! said manipulative means, means operable automaticallyunder control of said movable means to control said drive control meanslior causing said driving means to give the machine an automatic secondcycle of operation following the cycle initiated by the conditioning ofsaid manipulative means, and means conditioned by said manipulativemeans in one of said out-of-normal conditions to prevent eiectivecontrol of said drive control means by said automatically operable meansunder control oi said movable means but conditioned by said manipulativemeans in the other of said out-ofnormal conditions to permit eilectivecontrol of said drive control means by said automatically operable meansunder control o! said automatil cally movable means.

3. A calculating machine of the class described, having a motor operateddriving means, manipulative means conditionable to two out-oi-normalconditions, drive control means conditionable by said manipulative meansto cause said driving means to give the machine a cycle of operation, atraveling paper carriage normally automatically moved to a new positiontoward the end of each machine cycle, means controlling the movement ofsaid carriage and conditioned by said manipulative means when the latteris placed in either of said out-of-normal conditions to cause thecarriage to move near the end o! the ensuing machine cycle directly to apredetermined position and skip any intervening position, drive repeatmeans operable by movement o! said carriage to said predeterminedposition to control said drive control means for causing said drivingmeans to give the machine an automatic second cycle of operationfollowing the cycle initiated by the conditioning of said manipulativemeans,l and means conditioned by said manipulative means in one of saidout-oi' -normal conditions to prevent effective control of said drivecontrol means by said drive repeat means by movement of said carriagebut conditioned" by said manipulative means in the other of saidvout-of-normal conditions to cause effective control of said drivecontrol means by said drive repeat means by movement of said carriage.

ROBERT L. MULLER.

